I also use the rotational draw method. When I first viewed your video, I came away with the feeling that you weren’t doing the rotational draw the same way I was, but I had to draw in front of a mirror to figure out what the difference is. You draw in an upward direction and drop down into your anchor, as you state. I draw in a downward direction and raise up to my anchor. Don’t know if it makes any difference; different strokes, I guess. Anyway, I like the rotational draw too, and can’t imagine drawing any other way. It makes it easy to get into my back muscles, and I think it is easier on my shoulder as well.